At Adam's Bits, we are purveyors of End Mills, Router Bits and accessories. As a hobbyist in CNC with my own X-Carve, I was flabbergasted by the exorbitant price I had to pay for a collet reducer. My problem was, I needed it quick! So I paid the price of convenience but I said "I ain't doing that again" and a week later I started Adam's Bits. Any bit in my range (up to 6.35mm) I have used with great success and I know you will to. As a user, I am here to answer your questions and be of assistance. I am here to help. Happy shopping! Adam from Adam's Bits